Marathon Electric DVR 2000E+ - Page 49

49
Marathon Electric (a division of RBC Manufacturing Corp.) reserves the right to change specications and this manual without notice.
Revised 06/2011
Step 5. Verify that the front panel display is not indicating an alarm status. If the display indicates an alarm
status, refer to Appendix A – Alarm and Fault Codes to determine what alarm condition is being
indicated.Checkthegeneratorand/orloadconditions.Determinewhatiscausingthealarmcondition
and resolve the issue. Interrupt input power or shutdown the generator for a minimum of 30 seconds.
Repeat Step 6 until all alarm conditions have been resolved. When the display shows a status of RUN,
the regulator is functioning properly. If the generator voltage regulator is still poor, proceed to Step 6.
Step 6. Low generator output voltage may occur when operating in droop mode with an inductive load. Refer to
Section 3 – Features and Protection for more information about the Load Sharing function.
If the low voltage condition is not caused by the droop function, proceed to Step 7.
Step 7. Low generator output voltage may occur when the regulator input is being influenced by the auxil-
iary input. Refer to Section 3 – Features and Protection for more information about the Auxiliary Input
function.
If the low voltage condition is not caused by the auxiliary input, proceed to Step 8.
Step 8. Low generator output voltage may occur when the regulator input is being influenced by the UP and
DOWN contacts. Refer to Section 3 – Features and Protection for more information about the UP and
DOWN contacts.
If the low voltage condition is not caused by the UP and DOWN contacts, proceed to Step 9.
Step 9. Further system troubleshooting may be required. If it is determined that the rest of the system is not the
source of the problem, the DVR
®
2000E+ may need to be replaced.
Generator Output Unstable (Hunting)
Step 1. Verify that the governor for the prime mover is operating properly.
If the governor is not operating properly, troubleshoot using the manufacturer’s suggested procedures.
If the governor is operating properly, proceed to Step 2.
Step 2. Verify that the sensing and input power leads are connected securely.
If the sensing or input power leads are not connected securely, tighten the connections.
If the sensing or input power lead connections are secure, proceed to Step 3.
Step 3. Verify that the DVR
®
2000E+ Frame Size is set to the proper generator frame.
If the Frame Size setting is incorrect, re-enter the proper frame size.
If the Frame Size setting is correct, proceed to Step 4.
Step 4. Verify that the front panel display is not indicating an alarm status. If the display indicates an alarm sta-
tus, refer to Appendix A – Alarm and Fault Codes to determine what alarm condition is being indicated.
Checkthegeneratorand/orloadconditions.Determinewhatiscausingthealarmconditionandresolve
the issue. Interrupt input power or shutdown the generator for a minimum of 30 seconds.
Repeat Step 4 until all alarm conditions have been resolved. When the display shows a status of RUN,
the regulator is functioning properly. If the generator voltage regulator is still poor, proceed to Step 5.